<template>
    <!-- ref/children绑定到子组件上可以确立唯一性 -->
  <div class="wrapper" ref="wrapper">
      <div class="content">
          <slot></slot>
      </div>
  </div>
</template>

<script>
  import BScroll from 'better-scroll'
  import ObserveDOM from '@better-scroll/observe-dom'
  BScroll.use(ObserveDOM)
  
  export default {
    name: "Scroll",
    props: {
      probeType: {
        type: Number,
        default: 0
      },
      pullUpLoad: {
        type: Boolean,
        default: false
      }
    },
    data() {
      return {
        scroll: null,
        message: '哈哈哈'
      }
    },
    mounted() {
      // 1.创建BScroll对象
      this.scroll = new BScroll(this.$refs.wrapper, {
        click: true,
        probeType: this.probeType,
        pullUpLoad: this.pullUpLoad,
        observeDOM:true,
        observeImage:true,
        mouseWheel:true,
      })
      // 2.监听滚动的位置
      this.scroll.on('scroll', (position) => {
        // console.log(position);
        this.$emit('scroll', position)
      })
      // 3.监听上拉事件
      this.scroll.on('pullingUp', () => {
        this.$emit('pullingUp')
      })
    },
    methods: {
      scrollTo(x, y, time=500) {
        this.scroll && this.scroll.scrollTo(x, y, time)
      },
      finishPullUp() {
        this.scroll && this.scroll.finishPullUp()
      },
      refresh(){
				this.scroll && this.scroll.refresh()
			}
    }
  }
</script>

<style scoped>

</style>